The word(s) "دَابِرُ" appears in 4 verse(s) in Quran.

(1) فَقُطِعَ دَابِرُ الْقَوْمِ الَّذِينَ ظَلَمُوا ۚ وَالْحَمْدُ لِلَّهِ رَبِّ الْعَالَمِينَ

(سورة الأنعام, Al-An'aam, Chapter #6, Verse #45)
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(2) فَأَنجَيْنَاهُ وَالَّذِينَ مَعَهُ بِرَحْمَةٍ مِّنَّا وَقَطَعْنَا دَابِرَ الَّذِينَ كَذَّبُوا بِآيَاتِنَا ۖ وَمَا كَانُوا مُؤْمِنِينَ

(سورة الأعراف, Al-A'raaf, Chapter #7, Verse #72)
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(3) وَإِذْ يَعِدُكُمُ اللَّهُ إِحْدَى الطَّائِفَتَيْنِ أَنَّهَا لَكُمْ وَتَوَدُّونَ أَنَّ غَيْرَ ذَاتِ الشَّوْكَةِ تَكُونُ لَكُمْ وَيُرِيدُ اللَّهُ أَن يُحِقَّ الْحَقَّ بِكَلِمَاتِهِ وَيَقْطَعَ دَابِرَ الْكَافِرِينَ

(سورة الأنفال, Al-Anfaal, Chapter #8, Verse #7)
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(4) وَقَضَيْنَا إِلَيْهِ ذَ‌ٰلِكَ الْأَمْرَ أَنَّ دَابِرَ هَـٰؤُلَاءِ مَقْطُوعٌ مُّصْبِحِينَ

(سورة الحجر, Al-Hijr, Chapter #15, Verse #66)
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